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FIBS Board backgammon forum

Backgammon => Fibsboard Forum Matches => FFM2 => Topic started by: Zorba on July 04, 2009, 07:15:30 PM

Title: Game 2, move 5: roadkillbooks 3-1
Post by: Zorba on July 04, 2009, 07:15:30 PM
a5kdAAawuxkBAw:MIGlABAAAAAA

Yet another diagram! As I decreased the board size in GnuBG itself, this makes the text relatively bigger. Hopefully some of you don't have to squint anymore now  ;), let me know how this works out for you.

Title: Re: Game 2, move 5: roadkillbooks 3-1
Post by: stog on July 04, 2009, 07:53:44 PM
very good and nice size vicar
Title: Re: Game 2, move 5: roadkillbooks 3-1
Post by: roadkillbooks on July 04, 2009, 08:29:15 PM
Spoiler
13/10, 6/5 This just seems like the best thing to do.  Although I wasn't really afraid of getting hit with an indirect at this time. The other two reasonable moves seem to be about the same.  7/3 or 6/3, 13/12. I would just prefer to to slot behind the anchor at this time.  My sixes lok like they would play oddly but i can always use them to break my anchor
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Title: Re: Game 2, move 5: roadkillbooks 3-1
Post by: diane on July 04, 2009, 09:20:22 PM
That board is excellent - I will use that approach too  :thumbsup:

As for the move, seems pretty straightforward - cant do anything but 'what he said'  ;)
Title: Re: Game 2, move 5: roadkillbooks 3-1
Post by: playBunny on July 05, 2009, 03:31:14 AM
Spoiler
Quote from: roadkillbooks on July 04, 2009, 08:29:15 PM
13/10, 6/5 This just seems like the best thing to do.  Although I wasn't really afraid of getting hit with an indirect at this time.

I agree with not worrying about being hit at this point but I'd do 6/3. That's more to keep control of the outer table than to build the home, though home building rarely hurts.
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Title: Re: Game 2, move 5: roadkillbooks 3-1
Post by: playBunny on July 06, 2009, 09:42:05 PM
 
Rollout 1296 trials, 2-ply throughout

Spoiler
Keeping a guard in the outer field is slightly better than making safe. 
# .. Move ......... Equity . (Diff) ... Win .... WinG ... WinBg -- Lose ... LoseG . LoseBg
1 .. 13/12 6/3 .... +0.627 ............ 62.4% .. 12.1% ... 0.9% -- 37.6% ... 7.2% ... 0.1%
2 .. 7/3 .......... +0.621 (-0.006) ... 62.5% .. 11.7% ... 0.8% -- 37.5% ... 7.1% ... 0.1%
3 .. 13/10 6/5 .... +0.601 (-0.026) ... 62.1% .. 11.1% ... 0.7% -- 37.9% ... 6.9% ... 0.1%
4 .. 13/9 ......... +0.553 (-0.073) ... 61.3% .. 12.8% ... 1.0% -- 38.7% ... 9.1% ... 0.1%
Std Err ............ 0.009 ............. 0.1% ... 0.2% ... 0.2% --- 0.1% ... 0.2% ... 0.0%
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Title: Re: Game 2, move 5: roadkillbooks 3-1
Post by: socksey on July 07, 2009, 12:54:34 AM
Spoiler
I like rkb's move best.  What does Gnu know?   :laugh:  It's safe for me!   :yes:
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socksey



"Life is not about waiting for the storms to pass...it's about learning how to dance in the rain." - unknown
Title: Re: Game 2, move 5: roadkillbooks 3-1
Post by: Zorba on July 07, 2009, 05:06:27 PM
Q&D rollout cube:

Spoiler

Clearly not a double yet, our anchor means we don't lose too many gammons and our race lead gives us plenty of ways to win (almost 40% here).

Rollout details:
Centered 1-cube:
   61,35  10,19   0,62 -  38,65   6,37   0,16 CL  +0,3005 CF  +0,5510
[  0,16   0,17   0,12 -   0,16   0,12   0,03 CL   0,0047 CF   0,0113]
Player FIBSBoard forum owns 2-cube:
   61,51  10,17   0,76 -  38,49   6,50   0,15 CL  +0,7693 CF  +0,3952
[  0,17   0,18   0,14 -   0,17   0,13   0,03 CL   0,0110 CF   0,0140]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 863038590 and quasi-random dice
Play: 0-ply cubeful prune [expert]
Cube: 0-ply cubeful prune [expert]
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